The first recorded Basilisk was bred by Herpo the Foul, a Greek Dark wizard and Parselmouth, who discovered after much experimentation that a chicken egg hatched beneath a toad would produce a gigantic serpent possessed of extraordinarily dangerous powers.

The Basilisk is a brilliant green serpent that may reach up to fifty feet in length. The male has a scarlet plume upon its head. It has exceptionally venomous fangs but its most dangerous means of attack is the gaze of its large yellow eyes. Anyone looking directly into these will suffer instant death.

If the food source is sufficient (the Basilisk will eat all mammals and birds and most reptiles), the serpent may attain a very great age. Herpo the Foul’s Basilisk is believed to have lived for close on nine hundred years.

The creation of Basilisks has been illegal since medieval times, although the practice is easily concealed by simply moving the chicken eggs from beneath the toad when the Department for Regulation and Control of Magical Creatures comes to call. However, since Basilisks are uncontrollable except by Parselmouths, they are as dangerous to most Dark wizards as to anybody else, and there have been no recorded sightings of Basilisks in Britain for at least four hundred years.

The Billywig is an insect native to Australia. It is around half an inch long and a vivid sapphire blue, although its speed is such that it is rarely noticed by Muggles and often not by wizards until they have been stung. The Billywig’s wings are attached to the top of its head and are rotated very fast so that it spins as it flies. At the bottom of the body is a long thin sting. Those who have been stung by a Billywig suffer giddiness followed by levitation. Generations of young Australian witches and wizards have attempted to catch Billywig and provoke them into stinging in order to enjoy these side effects, though too many stings may cause the victim to hover uncontrollably for days on end, and where there is a severe allergic reaction, permanent floating may ensue. Dried Billywig stings are used in several potions and are believed to be a component in the popular sweet Fizzing Whizzbees.

The Bowtruckle is a tree-guardian creature found mainly in the west of England, southern Germany and certain Scandinavian forests. It is immensely difficult to spot, being small (maximum eight inches in height) and apparently made of bark and twigs with two small brown eyes.

The Bowtruckle, which eats insects, is a peaceable and intensely shy creature but if the tree in which it lives is threatened, it has been known to leap down upon the woodcutter or tree-surgeon attempting to harm its home and gouge at their eyes with its long, sharp fingers. An offering of woodlice will placate the Bowtruckle long enough to let a witch or wizard remove wand-wood from its tree.

Bundimuns are found worldwide. Skilled at creeping under floorboards and behind skirting boards, they infest houses. The presence of a Bundimun is usually announced by a foul stench of decay. The Bundimun oozes a secretion which rots away the very foundations of the dwelling in which it it found.

The Bundimun at rest resembles a patch of greenish fungus with eyes, though when alarmed it will scuttle away on its numerous spindly legs. It feeds on dirt. Scouring charms will rid a house of an infestation of Bundimuns, though if they have been allowed to grow too large, the Department for the Regulation and Control of Magical Creatures (Pest Sub-Division) should be contacted before the house collapses. Diluted Bundimun secretion is used in certain magical cleaning fluids.

The centaur has a human head, torso and arms joined to a horse’s body which may be any of several colours. Being intelligent and capable of speech, it should not strictly speaking be termed a beast, but by its own request it has been classified as such by the Ministry of Magic (see the Introduction to this book).

The centaur is forest-dwelling. Centaurs are believed to have originated in Greece, though there are now centaur communities in many  parts of Europe. Wizarding authorities in each of the countries where centaurs are found have allocated areas where the centaurs will not be troubled by Muggles; however, centaurs stand in little need of wizard protection, having their own means of hiding from humans.

The ways of the centaur are shrouded in mystery. They are generally speaking as mistrustful of wizards as they are of Muggles and indeed seem to make little differentiation between us. They live in herds ranging in size from ten to fifty members. They are reputed to be well versed in magical healing, divination, archery and astronomy.

The Chimaera is a rare Greek monster with a lion’s head, a goat’s body and a dragon’s tail. Vicious and bloodthirsty, the Chimaera is extremely dangerous. There is only one known instance of the successful slaying of a Chimaera and the unlucky wizard concerned fell to his death from his winged horse (see below) shortly afterwards, exhausted by his efforts. Chimaera eggs are classified as Grade A Non-Tradeable Goods.

Chizpurfles are small parasites up to a twentieth of an inch high, crab-like in appearance with large fangs. They are attracted by magic and may infest the fur and feathers of such creatures as Crups and Augureys. They will also enter wizard dwellings and attack magical objects such as wands, gradually gnawing their way through to the magical core, or else settle in dirty cauldrons, where they will gorge upon any lingering drops of potion.⁶ Though Chizpurfles are easy enough to destroy with any of a number of patented potions on the market, severe infestations may require a visit from the Pest Sub-Division of the Department for the Regulation and Control of Magical Creatures, as Chizpurfles swollen with magical substances will prove very hard to fight.

The Clabbert is a tree-dwelling creature, in appearance something like a cross between a monkey and a frog. It originated in the southern states of America, though it has since been exported worldwide. The smooth and hairless skin is a mottled green, the hands and feet are webbed, and the arms and legs are long and supple, enabling the Clabbert to swing between branches with the agility of an orang-utan. The head has short horns and the wide mouth, which appears to be grinning, is full of razor-sharp teeth. The Clabbert feeds mostly on small lizards and birds.

The Clabbert’s most distinctive feature is the large pustule in the middle of its forehead, which turns scarlet and flashes when it senses danger. American wizards once kept Clabberts in their gardens to give early warning of approaching Muggles, but the International Confederation of Wizards has introduced fines which have largely ended this practice. The sight of a tree at night full of glowing Clabbert pustules, while decorative, attracted too many Muggles wishing to ask why their neighbors still had their Christmas lights up in June.

The Crup originated in the southeast of England.It closely resembles as Jack Russel terrier, except for the forked tail. The Crup is almost certainly a wizard-created dog, as it is intensely loyal to wizards and ferocious towards Muggles. It is a great scavenger, eating anything from gnomes to old tyres. Crup licences may be obtained from the Department for the Regulation and Control of Magical Creatures on completion of a simple test to prove that the applicant wizard is capable of controlling the Crup in Muggle-inhabited areas. Crup owners are legally obliged to remove the Crup’s tail with a painless Severing Charm while the Crup is six to eight weeks old, lest Muggles notice it.